So today my friend and I went out with his car club and did some racing (at a closed airfield). I ran my buddy's car and afterwards the guys that were watching us said they saw white smoke coming out of my car when im shifting, what could this be?

(i have longtubes & ORY, not tuned yet.)

 

White smoke is usually water/steam. Depends on the relative humidity and how long the car sits. From warm to cool creates condensation in the pipes and will turn to steam in the exhaust. Just watch your coolant level for a while to see if the level changes.

 

White is usually a lean condition. Rich will give you black smoke. Oil will give you a blue tinted smoke. A gasket problem with coolant is white, but is usually pretty easy to detect by low coolant level in radiator. That or push coolant out the overflow tank on wot. I wouldn't do wot runs until the car is tuned correctly.

 

+1 for lean.

 

Mine does that sometimes when I shift to 2nd, my tires start spinning and then comes the white smoke. I would also say you are running lean, but you are on a stock tune. Do as red said and watch your guages. If the problem persists then be sure to update.